Method and apparatus for determining the rate of enzyme reaction
First Claim
1. A method of determining the rate of an enzyme reaction in which an enzyme quantity is determined from the rate of a reaction in a reaction solution having an absorbance changing approximately linearly with the time;
- said method comprising the steps of;
disposing a temperature sensor in the reaction solution for measuring the temperature thereof;
modifying the value of a temperature correction coefficient in accordance with temperature information from said sensor to correct for temperature changes in said reaction solution; and
using said value of said temperature correction coefficient to determine the rate of said enzyme reaction.
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Abstract
The rate of enzyme reaction is determined by determining of the quantity of enzyme, and deriving the rate of reaction per unit time of a reaction solution having an absorbance which is proportional to the time. A temperature correction coefficient which is used during the determination of the enzyme quantity is derived by temperature information which is supplied by a temperature sensor disposed within the reaction solution to be determined. An apparatus used for the determination of the rate of reaction comprises a means for containing the reaction solution, a temperature sensor directly disposed within the solution, a photoelectric transducer element responsive to light transmitting through the solution to determine the optical density of the solution, a logarithmic conversion circuit which converts the signal from the element into a corresponding absorbance signal, and a coefficient conversion circuit which is responsive to the combination of the absorbance signal and temperature information from the temperature sensor to correct a temperature coefficient.
21 Citations
7 Claims
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1. A method of determining the rate of an enzyme reaction in which an enzyme quantity is determined from the rate of a reaction in a reaction solution having an absorbance changing approximately linearly with the time;
- said method comprising the steps of;
disposing a temperature sensor in the reaction solution for measuring the temperature thereof; modifying the value of a temperature correction coefficient in accordance with temperature information from said sensor to correct for temperature changes in said reaction solution; and using said value of said temperature correction coefficient to determine the rate of said enzyme reaction.
- said method comprising the steps of;
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2. An apparatus for determining the rate of an enzyme reaction, comprising:
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reaction solution container means for containing a quantity of a reaction solution and including a transparent portion which permits light to pass through said reaction solution contained therein; a temperature sensor disposed in a position inside said container means and in direct contact with said reaction solution when said transparent cell contains said reaction solution for measuring the temperature thereof; a photoelectric transducer element responsive to light which is passed through said solution; a logarithmic conversion circuit for converting an electrical signal generated by said transducer element into a signal indicative of the absorbance of said reaction solution; and a coefficient conversion circuit for modifying a temperature correction coefficient used in the determination of the enzyme quantity responsive to both said signal from said logarithmic conversion circuit and temperature information from said temperature sensor. - View Dependent Claims (3, 4, 5, 6, 7)
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Specification